Piston-packing.



PATENTED AUG. 7, 1906. T. W. W. SMITH. I PISTON PACKING.

APPLICATION FILED MAR. 2, 1906.

W/TNESSES. HVVENTOH THOMAS W. W. SM IT H M m @M BY A TTOHNE YS UNITED snares PAT NT orrion.

THOMAS WALLACE WILLIAM SMITH, 0F BALTIMORE, MARYLAND.

i I PiS'TO'N -PACKING.

Specification of Letters Patent.

Patented Aug. 7, 1906;

Application filed March 2,1906. Serial No. 303,823.

.To all whom, it may concern:

Be it known that-I, TnonAsWALLAcnW1L-- LIAM SMITH, a citizen of the United States, and a resident of Baltimore, in the State of Maryland, have invented a new and Imstruction, arrangement, and com ination of parts shown by the accompanying drawings, ereinafter fully described, and as pointed out in the appended claims.

In the drawings, Figure 1 is a transverse sectional view taken on line 1 1 of Fig. 2' through a conventional form of piston, showing my invention in use. Fig.' 2 is a view showing a fragmentary portion of a common form ofpiston with my improved packing arranged thereon, the acking and piston being illustrated, part brolien away and in section.

Fig. 3 is a perspectiveview showing two adj acent broken-away ends of my packing-ring,

and Fi 4 is a transverse sectional view taken f on the inc 4 4 of Fi 2. Fig. 5 is a transverse sectional view in i1 ustration of another construction of my packing-ring.

My invention may be characterized as a pistonor other similar packingring,.employmg a series of segments constructed into attached parallel transversely-disposed sections with the sections fashioned into novel ar-.

rangement of attached layers, one upon the other, leaving the ends of the layers in one transverse plane of a rin -segment projecting in staggeredrelation an with the ends of another transverse plane of layers attached to the aforesaid plane'of layers arranged projecting in reversed staggered relation, adaptmg the segments to be assembled into ring form, with their ends lockedly jointed to gether.

In the practice of my invention, adapting same for use as packing on an ordinary form of reciprocating piston A, the packing is constructed into two 01 more curved segments B,

annular body or packing-ring C The piston A 's provided with a suitable adapted for arrangement endto end into an encircling groove 1), adapted to receive the packing-ring'and in said groove I arrange a series of springs .E, adapted for yieldingly supporting'the ring-segments B fiush'with or .slig

tly beyond the cylindrical outer surface ofthe piston, substantially as shown by Figs. 1 and 2.

.In contructing the ring-segments I employ a series of suitable plates F G in one segment B and a like series of plates H I in an ad oining se ment of the packin -ring. The plates F G 0 one segment and t e similar plates H Iof the next ad'oi'ning segment are arranged in parallel fiat p ane and secured to ether by transversely-disposed rivets J. I pon the plates F G of one segment B, I arrange similar plates K L and arrange like plates M N upon the plates H Iof an adjoining segment B.

The plates K L and M N are secured to the in ner plates F G and H I by suitable rivets 0. According to my invention the plate K in one segment is arranged upon the lnner plate F, leaving a projecting end P of the latter plate, and the similar plate L is arranged on the plate G in the same segment, with its end Q disposed projecting beyond the'end of the inner similar plate G, substantially as illustrated in Fig. 3. The ends of the ad loining ring-segment are formed substantial y like the. segment end above described, save that the end B of the plate M is disposed projecting beyond the'end of the inner similar plate I, adapted to overlie the projecting end P of the late F in abuttin segment and the end of the plate N located back on the-plate H, leaving the latter, with projecting end S, adapted for arrangement underlying the projecting end Q of the plate L. r

Now it is apparent that when the several segments B are arranged end to end, formin an annular body, with the ends of the severa lates disposed into the overlying and underying position above described and as will be .understood upon reference to Fig. 3, thatthe completed packing-ring (3, when arranged in its holding-groove D in a iston A or other similar op'eratingbody, t at the segments are lockedly connected to ether by means permitting of obvious yiel ing action in the packing and at the same time through extending a portion of the respective segments to overlying position on the adjoiningfsegment, providing Substantially an unbroken coupling of the several segments adapted to lockedly hold them together and at the same time afford an effective packing around the piston, insuring against leakage in its overriding port action.

Having thus described my improved packing-ring in detail, the advantages thereof will be apparent; but I would call particular attention to the fact that a packing-ringformed of segments constructed of a series of plates in lamination, one upon the other, and riveted together, and several aforesaid series of 'plates arranged in transverse plane and riveted together, as shown by Fi s. 3 and 4, is novel to improved'degree, in tiat when the outerplates K L'M N become worn the packing-ring may be removed and the worn-plates 4 readily detached through useofmeans obvious and not necessary to describe. When the outer or worn plates are removed, as above'described, the innenplatesimay be rearranged in the piston-groove. and used the same as. an ordinary packing-ring.

From the foregoing description it is a parent that my novel packing-ring is use 1 to an improved degree not onlyby reason of the peculiar splicing-joint for coupling of the ring-segments end to end, but in being construotedadapted to be formed into: practically a new packing-ring through simple removal 4 of .its outer. or. worn portion, as hereinbefore fully described.

In Fig. 5 of my drawings I illustrate another construction of my packing-ring, the same differing from the-form illustrated in the other figures of the drawings-,iin that the ries thereof, and means adapted for lockedl;

sections K L are one integral body instead of bein constructed of superimposed plates.

at I claim is 1. A packing-ring formed of a series of segments, the segments being constructed of a series of plates arranged securedly, one upon the other, and a like series of plates disposed in alinement, and secured to the aforesaid seconnecting the ends of the ring-segments, substantiall as described. 2. A pac 'n =rin employing a-series of plates arrange an securedone-upon the 50 other, a like series of arranged and secured ries of arranged and secured plates, suitably riveted to the aforesaid series thereof, the inner platesbeing arranged with flush ends and the next or outer plates arranged with one thereof dis osed projectin and the other with its en located suitab y back from the flush ends of the inner plates.

THOMAS NVALLAGE WILLIAM SMITH.

Witnesses:

THoMAs. HANRATTY, Jos. OOoNNoa. 

